Bed D - Gargorre [Gargorre Fm] (Miocene of Somalia)

Also known as Loc. 23

Where: Somalia (10.5° N, 50.7° E: paleocoordinates 10.1° N, 49.0° E)

• coordinate based on nearby landmark

• outcrop-level geographic resolution

When: Gargorre Formation (Hafún Group), Middle Miocene (16.0 - 11.6 Ma)

• STRATIGRAPHIC RELATIONS: From the Gargorre Fm [enterers usage] of the Hafún Series [group?], and presumably regionally overlies the Naag Fm [enterers usage] (Early Miocene) and is overlain by the Late Miocene conglomerates. THICKNESS: Difficult to ascertain, but a bed of not great thickness. AGE: Middle Miocene, equivalent to Burdigalian-Helvetian and uppermost Gaj/lower Mekran according to author on the basis of larger formaniferal and molluscan biostratigraphy. STRATIGRAPHIC POSITION: From Bed D, in middle of section.

• bed-level stratigraphic resolution

Environment/lithology: shallow subtidal; lithified, shelly/skeletal, white limestone

• ENVIRONMENT: Shallow subtidal carbonate environment.
• SPECIFIC LITHOLOGY: Calcari bianchi organogeno. LITHIFICATION: Lithified on the basis of figured specimens from adjacent beds.

Size class: macrofossils

Preservation: cast, mold/impression

Collected by Facca & Marchesini in 1938-1939

• COLLECTOR: Collected by G. Facca and E. Marchesini, 1938-1939. REPOSITORY: Museo dell' Istituto Geologico dell' Universitá di Firenze.

Primary reference: A. Azzaroli. 1958. L'Oligocene e il Miocene della Somalia. Stratigrafia, Tettonica, Paleontologia (Macroforaminferi, Coralli, Molluschi). Palaeontolographia Italica 52:1-142 [A. Hendy/A. Hendy]more details

Purpose of describing collection: general faunal/floral analysis

PaleoDB collection 78939: authorized by Austin Hendy, entered by Austin Hendy on 19.02.2008

Creative Commons license: CC BY (attribution)

Taxonomic list

• COVERAGE: Not exhaustive, but limited to characteristic gastropoda, bivalvia, foraminifera, and anthozoa. NOMENCLATURE: Authoritative publication, but with antiquated nomenclature.
Echinoidea
 Clypeasteroida - Fibulariidae
Echinocyamus sp. van Phelsum 1774 sand dollar
Gastropoda
 Sorbeoconcha - Strombidae
"Strombus cf. nodosus" = Persististrombus depertitus
"Strombus cf. nodosus" = Persististrombus depertitus Sowerby 1840 true conch
Bivalvia
 Cardiida - Cardiidae
Cardium sp. Linnaeus 1758 cockle
 Arcida - Arcidae
"Arca (Barbatia) sp." = Barbatia
"Arca (Barbatia) sp." = Barbatia Gray 1842 clam